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On the Cover

March-April 2010
Volume 98, Number 2

The accordionlike blubber on a fin whale's underside extends from mout...


FEATURE ARTICLES

The Ultimate Mouthful: Lunge Feeding in Rorqual Whales

Jeremy A. Goldbogen

New technologies bring action at depth to light at the surface


The Race for Real-time Photorealism *

Henrik Wann Jensen, Tomas Akenine-Möller

<em>3D Monster Maze</em> graphic

Algorithms and hardware promise graphics indistinguishable from reality


Gene-Culture Coevolution and Human Diet *

Timo Vuorisalo, Olli Arjamaa

Biology and culture have conspired to make us who we are


Finding Alzheimer's Disease *

Ralf Dahm

Confidence in the physical basis of mental disorders led to discovery of a disease


* access restricted to members and subscribers


DEPARTMENTS

MACROSCOPE

Just-as-good Medicine

Less expensive, lower-quality innovations abound in every economic sector—except medicine

David M. Kent

COMPUTING SCIENCE

Avoiding a Digital Dark Age

Data longevity depends on both the storage medium and the ability to decipher the information

Kurt D. Bollacker

ENGINEERING

Challenges and Prizes*

Incentives help motivate solutions to humanity’s needs and wants

Henry Petroski

MARGINALIA

Two Lives

Scientists do any number of things, besides science

Roald Hoffmann

SIGHTINGS

Tracking the Karakoram Glaciers

A photographer creates images of present-day glaciers from the same vantage point as that of historic photographs

Catherine Clabby

SCIENCE OBSERVER

Amplifying with Acid

More carbon dioxide in the atmosphere means a noisier ocean

Fenella Saunders

Sunburned Ferns?

Optical physics provides the antidote to a gardening myth

Anna Lena Phillips

In the News

LETTERS TO THE EDITORS

Understand the Material

Another View of Hydrogen Sulfide

An Apollonian Opportunity

SIGMA XI TODAY (PDF)


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